Connect to HubDB Data from a Connection Pool in Jetty

The CData JDBC driver for HubDB is easy to integrate with Java Web applications. This article shows how to efficiently connect to HubDB data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for HubDB in Jetty.

Configure the JDBC Driver for Salesforce as a JNDI Data Source

Follow the steps below to connect to Salesforce from Jetty.

1. Enable the JNDI module for your Jetty base. The following command enables JNDI from the command-line:

   java -jar ../start.jar --add-to-startd=jndi
   

2. Add the CData and license file, located in the lib subfolder of the installation directory, into the lib subfolder of the context path.

3. Declare the resource and its scope. Enter the required connection properties in the resource declaration. This example declares the HubDB data source at the level of the Web app, in WEB-INF\jetty-env.xml.

   <Configure id='hubdbdemo' class="org.eclipse.jetty.webapp.WebAppContext">
    <New id="hubdbdemo" class="org.eclipse.jetty.plus.jndi.Resource">
    <Arg><Ref refid="hubdbdemo"/></Arg>
    <Arg>jdbc/hubdbdb</Arg>
    <Arg>
    <New class="cdata.jdbc.hubdb.HubDBDriver">
    <Set name="url">jdbc:hubdb:</Set>
    <Set name="AuthScheme">OAuth</Set>
    <Set name="OAuthClientID">MyOAuthClientID</Set>
    <Set name="OAuthClientSecret">MyOAuthClientSecret</Set>
    <Set name="CallbackURL">http://localhost:33333</Set>
    <Set name="InitiateOAuth">GETANDREFRESH</Set>
    </New>
    </Arg>
    </New>
   </Configure>
   

   There are two authentication methods available for connecting to HubDB data source: OAuth Authentication with a public HubSpot application and authentication with a Private application token.

   Using a Custom OAuth App

   AuthScheme must be set to "OAuth" in all OAuth flows. Be sure to review the Help documentation for the required connection properties for you specific authentication needs (desktop applications, web applications, and headless machines).

   Follow the steps below to register an application and obtain the OAuth client credentials:

   1. Log into your HubSpot app developer account.
      • Note that it must be an app developer account. Standard HubSpot accounts cannot create public apps.
   2. On the developer account home page, click the Apps tab.
   3. Click Create app.
   4. On the App info tab, enter and optionally modify values that are displayed to users when they connect. These values include the public application name, application logo, and a description of the application.
   5. On the Auth tab, supply a callback URL in the "Redirect URLs" box.
      • If you're creating a desktop application, set this to a locally accessible URL like http://localhost:33333.
      • If you are creating a Web application, set this to a trusted URL where you want users to be redirected to when they authorize your application.
   6. Click Create App. HubSpot then generates the application, along with its associated credentials.
   7. On the Auth tab, note the Client ID and Client secret. You will use these later to configure the driver.

   8. Under Scopes, select any scopes you need for your application's intended functionality.

      A minimum of the following scopes is required to access tables:

      • hubdb
      • oauth
      • crm.objects.owners.read
   9. Click Save changes.
   10. Install the application into a production portal with access to the features that are required by the integration.
       • Under "Install URL (OAuth)", click Copy full URL to copy the installation URL for your application.
       • Navigate to the copied link in your browser. Select a standard account in which to install the application.
       • Click Connect app. You can close the resulting tab.

   Using a Private App

   To connect using a HubSpot private application token, set the AuthScheme property to "PrivateApp."

   You can generate a private application token by following the steps below:

   1. In your HubDB account, click the settings icon (the gear) in the main navigation bar.
   2. In the left sidebar menu, navigate to Integrations > Private Apps.
   3. Click Create private app.
   4. On the Basic Info tab, configure the details of your application (name, logo, and description).
   5. On the Scopes tab, select Read or Write for each scope you want your private application to be able to access.
   6. A minimum of hubdb and crm.objects.owners.read is required to access tables.
   7. After you are done configuring your application, click Create app in the top right.
   8. Review the info about your application's access token, click Continue creating, and then Show token.
   9. Click Copy to copy the private application token.

   To connect, set PrivateAppToken to the private application token you retrieved.

4. Configure the resource in the Web.xml:

    jdbc/hubdbdb
    javax.sql.DataSource
    Container
   
   

5. You can then access HubDB with a lookup to java:comp/env/jdbc/hubdbdb:

   InitialContext ctx = new InitialContext();
   DataSource myhubdb = (DataSource)ctx.lookup("java:comp/env/jdbc/hubdbdb");
   

More Jetty Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more use cases and information, see the Working with Jetty JNDI chapter in the Jetty documentation.